/*******************************************************************************
 * Copyright (c) 2013,  Paul Daniels
 * <p/>
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 * <p/>
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 * <p/>
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 ******************************************************************************/
package com.study.demo.components.jockeyjs;

import android.annotation.SuppressLint;
import android.util.Log;
import android.webkit.WebView;
import android.webkit.WebViewClient;

import com.alibaba.fastjson.JSON;
import com.study.demo.components.jockeyjs.util.ForwardingWebViewClient;

import java.net.URI;
import java.net.URISyntaxException;

@SuppressLint("SetJavaScriptEnabled") class JockeyWebViewClient extends ForwardingWebViewClient {

  private JockeyImpl _jockeyImpl;
  private WebViewClient _delegate;

  public JockeyWebViewClient(JockeyImpl jockey) {
    _jockeyImpl = jockey;
  }

  public JockeyImpl getImplementation() {
    return _jockeyImpl;
  }

  protected void setDelegate(WebViewClient client) {
    _delegate = client;
  }

  public WebViewClient delegate() {
    return _delegate;
  }

  @Override
  public boolean shouldOverrideUrlLoading(WebView view, String url) {

    if (delegate() != null && delegate().shouldOverrideUrlLoading(view, url)) return true;

    try {
      URI uri = new URI(url);

      if (isJockeyScheme(uri)) {
        processUri(view, uri);
        return true;
      }
    } catch (URISyntaxException e) {
      e.printStackTrace();
    } catch (HostValidationException e) {
      e.printStackTrace();
      Log.e("Jockey", "The source of the event could not be validated!");
    }
    return false;
  }

  public boolean isJockeyScheme(URI uri) {
    return uri.getScheme().equals("jockey") && !uri.getQuery().equals("");
  }

  public void processUri(WebView view, URI uri) throws HostValidationException {
    String[] parts = uri.getPath().replaceAll("^\\/", "").split("/");
    String host = uri.getHost();

    JockeyWebViewPayload payload =
        checkPayload(JSON.parseObject(uri.getQuery(), JockeyWebViewPayload.class));

    if (parts.length > 0) {
      if (host.equals("event")) {
        getImplementation().triggerEventFromWebView(view, payload);
      } else if (host.equals("callback")) {
        getImplementation().triggerCallbackForMessage(Integer.parseInt(parts[0]));
      }
    }
  }

  public JockeyWebViewPayload checkPayload(JockeyWebViewPayload fromJson)
      throws HostValidationException {
    validateHost(fromJson.host);
    return fromJson;
  }

  private void validateHost(String host) throws HostValidationException {
    getImplementation().validate(host);
  }
}